package zouze.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginFilter implements Filter{

	public void init(FilterConfig filterConfig) throws ServletException {
		
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest req=(HttpServletRequest) request;
		HttpServletResponse resp=(HttpServletResponse) response;
		HttpSession session = req.getSession();
		String name = (String) session.getAttribute("name");
		 String   uri   =   ((HttpServletRequest)   request).getRequestURI();   
		if (null!=name|| uri.endsWith("login.jsp")) {
			chain.doFilter(request, response);
		} else {
			// 跳转到登陆页面
			resp.sendRedirect(req.getContextPath()+"/zouze/login.jsp");
		}
	}

	public void destroy() {
		
	}

}
